Answer:
Not because of the world war 3 or nuclear holocaust or global warming or zombie apocalypse or alien invasion or robot warfare, - did I miss anything?
It’s simply because of the routine socio-economic trends with a 21st century twist.
You see every time there is a large wealth inequality, a revolution happens. When people on the lower rungs are given too little and people on the higher rungs are given way too much, something restores balance either violently or peacefully.
Step-by-step explanation: